A few interesting websites:
The Historical Marker Database
From Wikipedia, the free encyclopedia: Hot Stuff (aircraft)
Gen. Frank M. Andrews / Hot Stuff Monument project
Brotherhood of the FBI. Photos and articles from Iceland in WWII
Crash Site Pages
Bureau of Aircraft Accidents Archives
ACIA Air Crash investigation & Archaeology, northern England and southern Scotland
World War II Aircraft wreck sites in Norway & other countries
Peak District Air Accident Research
Aviation Research Group Orkney & Shetland
World War II Allied Aircraft Crashes in The Netherlands & North Sea
Museums
Flugsafn Íslands Akureyri - Icelandic Aviation Museum
War and Peace Museum Hvalfjörður
Military Records
Fold3 provides access to US-military records.